Actually, the Dodo was endemic to the island of Mauritius in the Indian Ocean, not the Galapagos Islands. Before humans invaded their habitat, they had much abundant food and few predators. In 80 short years, the sailors ate many of these creatures, as well as invasive species that came along for the journey(probably accidentally) and domesticated animals brought to the islands. Dodos were approximately 40 pounds and 3 feet tall and had no natural instincts to avoid man when he arrived, thus, they were easily slaughtered. In 1598, they were first mentioned by the Dutch. These birds were thought to be related to doves and pigeons. Oxford University has some Dodo remains, the other descriptions are based on sketches drawn by people who encountered them in the past.